workbench/libs/mesa/src/glsl/ir_print_visitor.cpp

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "ir_print_visitor.h"
  25 #include "glsl_types.h"
  26 #include "glsl_parser_extras.h"
  27
  28 extern "C" {
  29 #include "program/hash_table.h"
  30 }
  31
  32 static void print_type(const glsl_type *t);
  33
  34 void
  35 ir_instruction::print(void) const
  36 {
  37    ir_instruction *deconsted = const_cast<ir_instruction *>(this);
  38
  39    ir_print_visitor v;
  40    deconsted->accept(&v);
  41 }
  42
  43 void
  44 _mesa_print_ir(exec_list *instructions,
  45                struct _mesa_glsl_parse_state *state)
  46 {
  47    if (state) {
  48       for (unsigned i = 0; i < state->num_user_structures; i++) {
  49          const glsl_type *const s = state->user_structures[i];
  50
  51          printf("(structure (%s) (%s@%p) (%u) (\n",
  52                 s->name, s->name, (void *) s, s->length);
  53
  54          for (unsigned j = 0; j < s->length; j++) {
  55             printf("\t((");
  56             print_type(s->fields.structure[j].type);
  57             printf(")(%s))\n", s->fields.structure[j].name);
  58          }
  59
  60          printf(")\n");
  61       }
  62    }
  63
  64    printf("(\n");
  65    foreach_iter(exec_list_iterator, iter, *instructions) {
  66       ir_instruction *ir = (ir_instruction *)iter.get();
  67       ir->print();
  68       if (ir->ir_type != ir_type_function)
  69          printf("\n");
  70    }
  71    printf("\n)");
  72 }
  73
  74 ir_print_visitor::ir_print_visitor()
  75 {
  76    indentation = 0;
  77    printable_names =
  78       hash_table_ctor(32, hash_table_pointer_hash, hash_table_pointer_compare);
  79    symbols = _mesa_symbol_table_ctor();
  80    mem_ctx = ralloc_context(NULL);
  81 }
  82
  83 ir_print_visitor::~ir_print_visitor()
  84 {
  85    hash_table_dtor(printable_names);
  86    _mesa_symbol_table_dtor(symbols);
  87    ralloc_free(mem_ctx);
  88 }
  89
  90 void ir_print_visitor::indent(void)
  91 {
  92    for (int i = 0; i < indentation; i++)
  93       printf("  ");
  94 }
  95
  96 const char *
  97 ir_print_visitor::unique_name(ir_variable *var)
  98 {
  99    /* var->name can be NULL in function prototypes when a type is given for a
 100     * parameter but no name is given.  In that case, just return an empty
 101     * string.  Don't worry about tracking the generated name in the printable
 102     * names hash because this is the only scope where it can ever appear.
 103     */
 104    if (var->name == NULL) {
 105       static unsigned arg = 1;
 106       return ralloc_asprintf(this->mem_ctx, "parameter@%u", arg++);
 107    }
 108
 109    /* Do we already have a name for this variable? */
 110    const char *name = (const char *) hash_table_find(this->printable_names, var);
 111    if (name != NULL)
 112       return name;
 113
 114    /* If there's no conflict, just use the original name */
 115    if (_mesa_symbol_table_find_symbol(this->symbols, -1, var->name) == NULL) {
 116       name = var->name;
 117    } else {
 118       static unsigned i = 1;
 119       name = ralloc_asprintf(this->mem_ctx, "%s@%u", var->name, ++i);
 120    }
 121    hash_table_insert(this->printable_names, (void *) name, var);
 122    _mesa_symbol_table_add_symbol(this->symbols, -1, name, var);
 123    return name;
 124 }
 125
 126 static void
 127 print_type(const glsl_type *t)
 128 {
 129    if (t->base_type == GLSL_TYPE_ARRAY) {
 130       printf("(array ");
 131       print_type(t->fields.array);
 132       printf(" %u)", t->length);
 133    } else if ((t->base_type == GLSL_TYPE_STRUCT)
 134               && (strncmp("gl_", t->name, 3) != 0)) {
 135       printf("%s@%p", t->name, (void *) t);
 136    } else {
 137       printf("%s", t->name);
 138    }
 139 }
 140
 141
 142 void ir_print_visitor::visit(ir_variable *ir)
 143 {
 144    printf("(declare ");
 145
 146    const char *const cent = (ir->centroid) ? "centroid " : "";
 147    const char *const inv = (ir->invariant) ? "invariant " : "";
 148    const char *const mode[] = { "", "uniform ", "in ", "out ", "inout ",
 149                                 "const_in ", "sys ", "temporary " };
 150    const char *const interp[] = { "", "flat", "noperspective" };
 151
 152    printf("(%s%s%s%s) ",
 153           cent, inv, mode[ir->mode], interp[ir->interpolation]);
 154
 155    print_type(ir->type);
 156    printf(" %s)", unique_name(ir));
 157 }
 158
 159
 160 void ir_print_visitor::visit(ir_function_signature *ir)
 161 {
 162    _mesa_symbol_table_push_scope(symbols);
 163    printf("(signature ");
 164    indentation++;
 165
 166    print_type(ir->return_type);
 167    printf("\n");
 168    indent();
 169
 170    printf("(parameters\n");
 171    indentation++;
 172
 173    foreach_iter(exec_list_iterator, iter, ir->parameters) {
 174       ir_variable *const inst = (ir_variable *) iter.get();
 175
 176       indent();
 177       inst->accept(this);
 178       printf("\n");
 179    }
 180    indentation--;
 181
 182    indent();
 183    printf(")\n");
 184
 185    indent();
 186
 187    printf("(\n");
 188    indentation++;
 189
 190    foreach_iter(exec_list_iterator, iter, ir->body) {
 191       ir_instruction *const inst = (ir_instruction *) iter.get();
 192
 193       indent();
 194       inst->accept(this);
 195       printf("\n");
 196    }
 197    indentation--;
 198    indent();
 199    printf("))\n");
 200    indentation--;
 201    _mesa_symbol_table_pop_scope(symbols);
 202 }
 203
 204
 205 void ir_print_visitor::visit(ir_function *ir)
 206 {
 207    printf("(function %s\n", ir->name);
 208    indentation++;
 209    foreach_iter(exec_list_iterator, iter, *ir) {
 210       ir_function_signature *const sig = (ir_function_signature *) iter.get();
 211       indent();
 212       sig->accept(this);
 213       printf("\n");
 214    }
 215    indentation--;
 216    indent();
 217    printf(")\n\n");
 218 }
 219
 220
 221 void ir_print_visitor::visit(ir_expression *ir)
 222 {
 223    printf("(expression ");
 224
 225    print_type(ir->type);
 226
 227    printf(" %s ", ir->operator_string());
 228
 229    for (unsigned i = 0; i < ir->get_num_operands(); i++) {
 230       ir->operands[i]->accept(this);
 231    }
 232
 233    printf(") ");
 234 }
 235
 236
 237 void ir_print_visitor::visit(ir_texture *ir)
 238 {
 239    printf("(%s ", ir->opcode_string());
 240
 241    print_type(ir->type);
 242    printf(" ");
 243
 244    ir->sampler->accept(this);
 245    printf(" ");
 246
 247    ir->coordinate->accept(this);
 248
 249    printf(" ");
 250
 251    if (ir->offset != NULL) {
 252       ir->offset->accept(this);
 253    } else {
 254       printf("0");
 255    }
 256
 257    printf(" ");
 258
 259    if (ir->op != ir_txf) {
 260       if (ir->projector)
 261          ir->projector->accept(this);
 262       else
 263          printf("1");
 264
 265       if (ir->shadow_comparitor) {
 266          printf(" ");
 267          ir->shadow_comparitor->accept(this);
 268       } else {
 269          printf(" ()");
 270       }
 271    }
 272
 273    printf(" ");
 274    switch (ir->op)
 275    {
 276    case ir_tex:
 277       break;
 278    case ir_txb:
 279       ir->lod_info.bias->accept(this);
 280       break;
 281    case ir_txl:
 282    case ir_txf:
 283       ir->lod_info.lod->accept(this);
 284       break;
 285    case ir_txd:
 286       printf("(");
 287       ir->lod_info.grad.dPdx->accept(this);
 288       printf(" ");
 289       ir->lod_info.grad.dPdy->accept(this);
 290       printf(")");
 291       break;
 292    };
 293    printf(")");
 294 }
 295
 296
 297 void ir_print_visitor::visit(ir_swizzle *ir)
 298 {
 299    const unsigned swiz[4] = {
 300       ir->mask.x,
 301       ir->mask.y,
 302       ir->mask.z,
 303       ir->mask.w,
 304    };
 305
 306    printf("(swiz ");
 307    for (unsigned i = 0; i < ir->mask.num_components; i++) {
 308       printf("%c", "xyzw"[swiz[i]]);
 309    }
 310    printf(" ");
 311    ir->val->accept(this);
 312    printf(")");
 313 }
 314
 315
 316 void ir_print_visitor::visit(ir_dereference_variable *ir)
 317 {
 318    ir_variable *var = ir->variable_referenced();
 319    printf("(var_ref %s) ", unique_name(var));
 320 }
 321
 322
 323 void ir_print_visitor::visit(ir_dereference_array *ir)
 324 {
 325    printf("(array_ref ");
 326    ir->array->accept(this);
 327    ir->array_index->accept(this);
 328    printf(") ");
 329 }
 330
 331
 332 void ir_print_visitor::visit(ir_dereference_record *ir)
 333 {
 334    printf("(record_ref ");
 335    ir->record->accept(this);
 336    printf(" %s) ", ir->field);
 337 }
 338
 339
 340 void ir_print_visitor::visit(ir_assignment *ir)
 341 {
 342    printf("(assign ");
 343
 344    if (ir->condition)
 345       ir->condition->accept(this);
 346
 347    char mask[5];
 348    unsigned j = 0;
 349
 350    for (unsigned i = 0; i < 4; i++) {
 351       if ((ir->write_mask & (1 << i)) != 0) {
 352          mask[j] = "xyzw"[i];
 353          j++;
 354       }
 355    }
 356    mask[j] = '\0';
 357
 358    printf(" (%s) ", mask);
 359
 360    ir->lhs->accept(this);
 361
 362    printf(" ");
 363
 364    ir->rhs->accept(this);
 365    printf(") ");
 366 }
 367
 368
 369 void ir_print_visitor::visit(ir_constant *ir)
 370 {
 371    const glsl_type *const base_type = ir->type->get_base_type();
 372
 373    printf("(constant ");
 374    print_type(ir->type);
 375    printf(" (");
 376
 377    if (ir->type->is_array()) {
 378       for (unsigned i = 0; i < ir->type->length; i++)
 379          ir->get_array_element(i)->accept(this);
 380    } else if (ir->type->is_record()) {
 381       ir_constant *value = (ir_constant *) ir->components.get_head();
 382       for (unsigned i = 0; i < ir->type->length; i++) {
 383          printf("(%s ", ir->type->fields.structure[i].name);
 384          value->accept(this);
 385          printf(")");
 386
 387          value = (ir_constant *) value->next;
 388       }
 389    } else {
 390       for (unsigned i = 0; i < ir->type->components(); i++) {
 391          if (i != 0)
 392             printf(" ");
 393          switch (base_type->base_type) {
 394          case GLSL_TYPE_UINT:  printf("%u", ir->value.u[i]); break;
 395          case GLSL_TYPE_INT:   printf("%d", ir->value.i[i]); break;
 396          case GLSL_TYPE_FLOAT: printf("%f", ir->value.f[i]); break;
 397          case GLSL_TYPE_BOOL:  printf("%d", ir->value.b[i]); break;
 398          default: assert(0);
 399          }
 400       }
 401    }
 402    printf(")) ");
 403 }
 404
 405
 406 void
 407 ir_print_visitor::visit(ir_call *ir)
 408 {
 409    printf("(call %s (", ir->callee_name());
 410    foreach_iter(exec_list_iterator, iter, *ir) {
 411       ir_instruction *const inst = (ir_instruction *) iter.get();
 412
 413       inst->accept(this);
 414    }
 415    printf("))\n");
 416 }
 417
 418
 419 void
 420 ir_print_visitor::visit(ir_return *ir)
 421 {
 422    printf("(return");
 423
 424    ir_rvalue *const value = ir->get_value();
 425    if (value) {
 426       printf(" ");
 427       value->accept(this);
 428    }
 429
 430    printf(")");
 431 }
 432
 433
 434 void
 435 ir_print_visitor::visit(ir_discard *ir)
 436 {
 437    printf("(discard ");
 438
 439    if (ir->condition != NULL) {
 440       printf(" ");
 441       ir->condition->accept(this);
 442    }
 443
 444    printf(")");
 445 }
 446
 447
 448 void
 449 ir_print_visitor::visit(ir_if *ir)
 450 {
 451    printf("(if ");
 452    ir->condition->accept(this);
 453
 454    printf("(\n");
 455    indentation++;
 456
 457    foreach_iter(exec_list_iterator, iter, ir->then_instructions) {
 458       ir_instruction *const inst = (ir_instruction *) iter.get();
 459
 460       indent();
 461       inst->accept(this);
 462       printf("\n");
 463    }
 464
 465    indentation--;
 466    indent();
 467    printf(")\n");
 468
 469    indent();
 470    if (!ir->else_instructions.is_empty()) {
 471       printf("(\n");
 472       indentation++;
 473
 474       foreach_iter(exec_list_iterator, iter, ir->else_instructions) {
 475          ir_instruction *const inst = (ir_instruction *) iter.get();
 476
 477          indent();
 478          inst->accept(this);
 479          printf("\n");
 480       }
 481       indentation--;
 482       indent();
 483       printf("))\n");
 484    } else {
 485       printf("())\n");
 486    }
 487 }
 488
 489
 490 void
 491 ir_print_visitor::visit(ir_loop *ir)
 492 {
 493    printf("(loop (");
 494    if (ir->counter != NULL)
 495       ir->counter->accept(this);
 496    printf(") (");
 497    if (ir->from != NULL)
 498       ir->from->accept(this);
 499    printf(") (");
 500    if (ir->to != NULL)
 501       ir->to->accept(this);
 502    printf(") (");
 503    if (ir->increment != NULL)
 504       ir->increment->accept(this);
 505    printf(") (\n");
 506    indentation++;
 507
 508    foreach_iter(exec_list_iterator, iter, ir->body_instructions) {
 509       ir_instruction *const inst = (ir_instruction *) iter.get();
 510
 511       indent();
 512       inst->accept(this);
 513       printf("\n");
 514    }
 515    indentation--;
 516    indent();
 517    printf("))\n");
 518 }
 519
 520
 521 void
 522 ir_print_visitor::visit(ir_loop_jump *ir)
 523 {
 524    printf("%s", ir->is_break() ? "break" : "continue");
 525 }